Once you understand low intermediate grammar, the best way to prepare for high intermediate is to be very good at using have in present tense and memorizing a lot of irregular verbs.
Write about a time you beat the odds -- a time you did something other people didn't think you could do.
At the end of the day, many military units play "Taps" at bedtime. "Taps" is often played at military funerals. It's rare to hear lyrics except in Boy Scouts. "Safely Rest" (not "Bob Good Night") is usually the last line.
Today: Memorial Day 2020
One of my students suggested the following song as a tribute to military families.